Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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John Koryakos, MD

Individual provider Internal Medicine Physician · NPI 1598841884

John Koryakos, MD is an Internal Medicine in Phoenix, Arizona. Qualified in 1989, 37 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Arizona and California.

Years since qualifying
37
Licensed in
AZ, CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9225 N 3rd St Ste 305
Phoenix, AZ 85020-2466
Phone: (602) 944-1401
Fax: (602) 944-1879
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 24570 (AZ)
Internal Medicine Physician Taxonomy 207R00000X · Licence A55548 (CA)

Record details

NPI number1598841884
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 29, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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